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A mountain biker cornering hard on a dusty forest trail, lit by a shaft of sunlight
Glasses land spring 2027

Affordable performance eyewear, built your way.

For athletes who challenge themselves but don’t take it too seriously.

The first drop.

Merch lands before the glasses do.

We’re putting our name on a first run of merch while the glasses finish development. Get an email when the shop opens.

Not a costume. Not a race team. Gear that works and looks good without shouting.

A mountain biker rolling down a granite slab through pine trees

Two riders. No logo tax.

Performance eyewear without the $200-plus price tag, or the ego.

We’re two founders in Boulder who ride, race sometimes, and got tired of paying for logos. So we’re building the pair we wanted: frames, lenses, and parts you mix and match, sold direct.

Your pair, your parts.

Big eyewear brands sell you their look. We sell you the components. Swap the lens when the light changes. Replace the part that broke, not the whole pair.

  • Frame
  • Lens
  • Temple arms
  • Nose pad

Questions

When can I buy Sinter sunglasses?
The glasses launch in spring 2027. Merch goes on sale before that. Sign up and we’ll email you when each is ready.
What does modular mean for sunglasses?
Frames, lenses, and parts are sold separately and lock together. Build the pair you want, swap lenses when the light changes, and replace one part instead of the whole pair.
How much will they cost?
Prices aren’t set yet. The aim is performance eyewear without the $200-plus price tag. We’ll publish prices before launch.
Who makes Sinter?
Two founders who ride, based in Boulder, Colorado. Sinter is independent and sells direct.
Why the name Sinter?
Sintering fuses powdered material into a solid, stronger part with heat and pressure. It’s how we think about the product: separate components that lock together into something better.